This paper examines Diocletian's edict on maximum prices, a decree made with the goal of controlling inflation in the time of the tetrarchy. Other than prescribing maximum prices for certain goods, it also prescribes wages for certain services. This information, compiled from several sources, is necessary for an understanding of the social position of people included in the industry of the extraction and processing of stone. Here, based on the sources displayed and the order of emphasized questions, the prescribed wages of physical workers (stonemasons, floor-layers and mosaic-makers) are compared, with special emphasis on mosaic workers. In addition, references that give us a better image of the workers' standard of living, as well as their social position, are provided.